Our hearts are broken. After suffering from full cardiac arrest, rock legend Tom Petty has died, a family spokeswoman confirms. Get all the gut-wrenching details here.

Tom Petty is dead, less than 24 hours after he was rushed to UCLA Santa Monica Hospital on Oct. 1 — due to experiencing full cardiac arrest, a family spokeswoman confirmed to the LA Times. “On behalf of the Tom Petty family, we are devastated to announce the untimely death of our father, husband, brother, leader and friend Tom Petty. He suffered cardiac arrest at his home in Malibu in the early hours of this morning and was taken to UCLA Medical Center but could not be revived. He died peacefully at 8:40 p.m. PT surrounded by family, his bandmates and friends.— Tony Dimitriades, longtime manager of Tom Petty & The Heartbreakers on behalf of the family.”

The rock legend previously regained his pulse after EMTs raced to his Malibu home, found him unconscious, and transported him to the hospital, but sadly, his condition never improved, according to TMZ. He was allegedly put on life support, but when no brain activity was detected, a decision was made to pull the plug. Tom, who became famous with Tom Petty and the Heartbreakers in 1978 with “Breakdown,” was only 66 years old at the time of his death.

Before his passing, Tom continued to tour around the world Tom Petty and the Heartbreakers. In fact, the band, who hit their prime in the 70s and 80s, just wrapped a tour at the end of September, closing out with a string of shows at the Hollywood Bowl in honor of the group’s 40th anniversary. “They were some of his best shows ever,” a concertgoer told HollywoodLife.com EXCLUSIVELY. “I’ve seen him tons of times. He was great, sounded good and was running around stage like usual. He was telling funny stories to the audience. He always fully connects with the crowd and makes it very intimate. There was no sense that anything was wrong with him at all.” So sad. Click here to see more pics of Tom Petty!

Following his hospitalization and reported death, the LA County Fire Department released the following statement to HollywoodLife.com, “We received a call at 10:45 PM for an older man in cardiac arrest. When EMTs arrived at the residence they immediately began life-saving procedures and the patient was transported to a local hospital. At the moment we can’t confirm the age of the man or that it is Tom Petty as much of those determinations will be made by the hospital medical staff.”

Tom is survived by his second wife, Dana York Epperson. Thet met in 1991 when she attended one of his concerts, but he was still married to Jane Benyo at the time. Tom has two kids, whom he shares with Jane — Adria Petty and Kimberly Violette Petty.

Our thoughts and prayers go out to Tom Petty’s family and friends during this difficult time in his life.